Would like to request help with wired internet problem. I am using Jaunty on a PC, I had to add a new Lan card on the PC because the internal one got damaged and didn't work (I was on WinXP then), it worked quite well on XP, and then I migrated to Jaunty, worked okay as well.

However recently I have noticed that though I do not see any disconnection information, the Icon for network looks normal, Clicking "connection information" looks normal, ifconfig also shows a connection. But all communications with my Linksys router would stop, I wouldn't even be able to access the router setup using the browser.

This problem comes up sometimes after 10 minutes, but sometimes after a few hours. There is no indication that I have no connection so that gmails are unsent, forum posts will be unsent, and the only way to fix the problem (so far is to reboot the computer).

I have tried clicking on icon, turning off and then on network connection, and turning off and on the eth0, but when I do this, the network will now show disconnected and wont' be able to reconnect at all unless I reboot. I have tried using a terminal and doing ifconfig down and up and also network restart, all of these do not work.

Anyone can suggest a way to reconnect or reestablish connection with my Router without having to reboot? On winXP, I can usually just "repair" the connection, or at times I actually disable the network card and then enable it, and that usually works. Another thing is ipconfig /renew all would also work... I can't find a way to do this in Jaunty unfortunately. :(

These were taken while the connection is still okay. If there is a terminal command to I need to check when the connection has stalled, so we can trouble shoot please let me know. :)

arvin555

September 22nd, 2009, 04:54 AM

Unfortunately, no improvements, still had a "hanged" or stalled connection even though Ubuntu network manager thinks that it is still connected, no connection with the router.

I tried disabling network connecction using network manager, waiting for a long time and then enabling, still no go. :( This problem is intermittent, I went one whole day without the problem, then just this morning 2 times in a row. :(

At least an someone confirm if what I understand is correct that my eth0 is Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 78 )?

TTFN
Arvin

lisati

September 22nd, 2009, 04:58 AM

How's your connection from the router to the internet? I occasionally experience hassles with my ADSL connection is playing up, but found that things improved recently when I rewired the connection from my ADSL modem to the the phone line. (I was using two extension leads on the phone line & moved things around so that I could unplug one of them.)

arvin555

September 22nd, 2009, 06:39 AM

Lisati,

Thanks for your feedback, unfortunately it is not the internet connection as the Router to Modem to Internet is okay, not great as sometimes I need to restart both to get connection, but I think I have eliminated that as possible problem because if it's the modem/internet connection, I should still be able to connect to my router configuration/setup page using my browser. I actually do this to "remotely" reset the router DHCP and or do a restart.

When my actual problem happens, I can't even connect to the router as well. I have a feeling that the network card hangs or crashes and needs a "reset". In Windows before I can uninstall it, and then reinstall and usually that will fix it. The problem with Ubuntu is that when I disable then reanable networking, the problem still is there. Only solution that I have for now is to shut down and then turn on the PC again.

TTFN
Arvin

arvin555

September 30th, 2009, 04:44 PM

Just wanted to update, and I might have found the solution to my problem.

2. But recently I have been experimenting by just pulling off the LAN cable from the LAN card, waiting a bit and then plugging it back in. The connection manager will of course tell me that the wired connection is disconnected, but often after I reconnect the LAN cable, I get info that eth0 is connected again.

3. A few times this did not work, so what I did was do the same thing, unplug then plug in, then if nothing happens I disable networking by right clicking on the network icon on the toolbar, then unchecking network connection, it will disconnect, then I click again to reconnect, then it will try to search for connection and usually it does detect and eth0 will be up again.

I still have no idea why the connection stalls, maybe it has to do with my cable or my Linksys router, but at least I don't have to always reboot when this happens again.